Valve Clearance Adjustment - Carter Talon 150 FX Series Service Manual

VALVE CLEARANCE ADJUSTMENT

Valve clearance is an important technical parameter in the
valve train. In order to make sure that during any condi-
tions, especially when the engine is overheated, or in cold
conditions a certain clearance must be kept. This clearance
is called valve clearance. When the engine is running, the
valve clearance must not be too big or too small. So, valve
clearance adjustment is an important procedure in the valve
train maintenance.
Remove the cylinder head cover.
Inspection and adjustment should be done in
cool conditions (below 35
Turn the cooling fan clockwise until the mark of the timing drive sprocket on the camshaft is at the
top, dead center, and the "T" symbol (or other mark) of the magneto flywheel aligns to the crank-
case mark.
The crankshaft should corotate, or the exhaust port may not be adjusted.
When adjusting, loosen the lock nuts, adjust the bolts with
a valve-adjusting wrench when turned clockwise the valve
clearance decreases. And when turned counterclockwise
the valve clearance increases. Put a feeler gauge with spe-
cific sizes between the valve and rocket to check for correct
clearance.
Take out the feeler gauge, tighten the lock nuts, and then inspect the valve clearance again.
Sometimes when tightening the lock nuts the clearance will change,
so it must be rechecked for the proper clearance.
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Valve Clearance 0.08 ~ 0.12mm
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